Technical System Options

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1 Technical System OptionsSpecify technical environmentConfirm functionality of new systemAnalyse impact on organisationProvide cost/benefit analysesProvide a stop/go pointe.g. Like Feasibility and Business System OptionsOften the basis for procurementEnables detailed physical design

3 Technical Environment Description HardwareHardware TED is generic rather than specificSystem Diagram showing layoutnumber of terminals or PCsprinterscommunication linesprocessorsother devicesHardware also subject to System TED

6 System DescriptionShows how option satisfies Requirements SpecificationSupports major decisions taken in Business System OptionsIncludes alternative systems with trade-offsShows degree to which system requirements metNB. It is also important to show which functions/facilities will not be providedIncludesRequired System Logical Data ModelFunction DefinitionsRequirements Catalogue (showing solutions based on the option)

8 Outline Development PlanEnables development costs to be estimatedShows next module in detailShows outline of subsequent plansShould contain time, resource and cost estimates forphysical designprogram design and programmingprocurementsystem testingimplementation

9 Cost/Benefit AnalysisMost objective way to compare merits of optionsCost/Benefit Analysis should cover:development costsoperating coststangible benefits and displaced costsi.e. Current system costs eliminated by new systemcost containmentIntangible benefitsimproved product qualityimproved service to customersgreater job satisfaction for employeesimproved management information

10 Considerations for TSOsStaff involvedExternal and internal constraintsDevelopment of outline Technical System OptionsRefining Technical System OptionsMaking the selectionDocumenting the selection

15 Making the Selection Present TSOsNB. Presentations frequently made to users as well as Project BoardPrepare carefully for presentationprovide amplification and answer queriesrecord significant commentsOften selection chosen is hybrid of optionsdocument the selectionrecord reasons for selectionUpdate selected Technical System OptionUpdate associated Technical Environment Description

16 Further ActivitiesDevelop Application Style Guide from Installation Style GuideService Level Requirements become the basis for Service Level AgreementsPhysical design will be based on the Technical Environment Description